منابع مشابه
Rough Sets and Matroids
We prove the recent result of Liu and Zhu [2] and discuss some consequences of that and related facts for the development of rough set theory.
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In mathematics and computer science, connectivity is one of the basic concepts of matroid theory: it asks for the minimum number of elements which need to be removed to disconnect the remaining nodes from each other. It is closely related to the theory of network flow problems. The connectivity of a matroid is an important measure of its robustness as a network. Therefore, it is very necessary ...
متن کاملAlgebraic characteristic sets of matroids
For a matroid M, define the algebraic characteristic set x4(M) to be the set of field characteristics over which M can be algebraically represented. We construct many examples of rank three matroids with finite, non-singleton algebraic characteristic sets. We also determine x,,(PG(Z, p)) and xa(AG(2, p)). An infinite family of rank three matroids with empty algebraic characteristic set is const...
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At present, practical application and theoretical discussion of rough sets are two hot problems in computer science. The core concepts of rough set theory are upper and lower approximation operators based on equivalence relations. Matroid, as a branch of mathematics, is a structure that generalizes linear independence in vector spaces. Further, matroid theory borrows extensively from the termin...
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ژورنال
عنوان ژورنال: Journal of Combinatorial Theory, Series B
سال: 1984
ISSN: 0095-8956
DOI: 10.1016/0095-8956(84)90071-6